Labour Share Developments Over the Past Two Decades: the Role of Public Policies

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Labour Share Developments Over the Past Two Decades: the Role of Public Policies Organisation for Economic Co-operation and Development ECO/WKP(2019)10 Unclassified English - Or. English 14 February 2019 ECONOMICS DEPARTMENT LABOUR SHARE DEVELOPMENTS OVER THE PAST TWO DECADES: THE ROLE OF PUBLIC POLICIES ECONOMICS DEPARTMENT WORKING PAPERS No. 1541 By Mathilde Pak and Cyrille Schwellnus OECD Working Papers should not be reported as representing the official views of the OECD or of its member countries. The opinions expressed and arguments employed are those of the author(s). Authorised for publication by Luiz de Mello, Director, Policy Studies Branch, Economics Department. All Economics Department Working Papers are available at www.oecd.org/eco/workingpapers. JT03443157 This document, as well as any data and map included herein, are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area. 2 │ ECO/WKP(2019)10 OECD Working Papers should not be reported as representing the official views of the OECD or of its member countries. The opinions expressed and arguments employed are those of the author(s). Working Papers describe preliminary results or research in progress by the author(s) and are published to stimulate discussion on a broad range of issues on which the OECD works. Comments on Working Papers are welcomed, and may be sent to OECD Economics Department, 2 rue André Pascal, 75775 Paris Cedex 16, France, or by e-mail to [email protected]. All Economics Department Working Papers are available at www.oecd.org/eco/workingpapers This document and any map included herein are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area. © OECD (2019) _____________________________________________________________________________________ You can copy, download or print OECD content for your own use, and you can include excerpts from OECD publications, databases and multimedia products in your own documents, presentations, blogs, websites and teaching materials, provided that suitable acknowledgment of OECD as source and copyright owner is given. All requests for commercial use and translation rights should be submitted to [email protected] _____________________________________________________________________________________ LABOUR SHARE DEVELOPMENTS OVER THE PAST TWO DECADES: THE ROLE OF PUBLIC POLICIES Unclassified ECO/WKP(2019)10 │ 3 ABSTRACT/RÉSUME Labour share developments over the past two decades: The role of public policies Labour share developments over the past two decades have differed widely across OECD countries, with about half of them experiencing significant declines. This paper analyses the role of public policies in shaping labour share developments across countries. The results suggest that pro-competition product market reforms raise the labour share by reducing producer rents. Labour market reforms that strengthen the bargaining position of workers, such as tightening employment protection or raising minimum wages, may raise wages in the short term but risk triggering the substitution of capital for labour in the medium term. On average, across countries, such reforms are estimated to reduce the labour share. By contrast, promoting the re-employment of workers who lose their jobs through active labour market policies unambiguously raises the labour share. JEL Classification codes: D33, J38, J58. Keywords: labour share, public policies, difference-in-differences estimation ********* Évolution de la part du travail dans le revenu des facteurs au cours des vingt dernières années : influence des politiques publiques Au cours des vingt dernières années, la part du travail dans le revenu des facteurs a évolué de façon très différenciée selon les pays de l’OCDE, avec une baisse importante dans environ la moitié d’entre eux. Ce papier analyse le rôle des politiques publiques pour expliquer l’évolution de la part du travail dans les différents pays. D’après les résultats, les réformes favorisant la concurrence sur le marché des produits augmentent la part du travail en réduisant la rente des producteurs. Les réformes du marché du travail qui renforcent la position de négociation des travailleurs, comme renforcer la protection de l’emploi ou augmenter le salaire minimum, peuvent augmenter les salaires à court terme, mais risquent de provoquer la substitution du travail par le capital à moyen terme. Selon les estimations, de telles réformes réduisent la part du travail en moyenne dans les pays. En revanche, promouvoir la réembauche de travailleurs ayant perdu leur emploi, grâce à des politiques actives du marché du travail, augmente sans ambiguïté la part du travail dans le revenu des facteurs. Classification JEL: D33, J38, J58. Mots-clés: part du travail, politiques publiques, estimation en doubles différence LABOUR SHARE DEVELOPMENTS OVER THE PAST TWO DECADES: THE ROLE OF PUBLIC POLICIES Unclassified 4 │ ECO/WKP(2019)10 Table of contents Labour share developments over the past two decades: The role of public policies ....................... 5 1. Introduction ...................................................................................................................................... 5 2. The role of public policies and institution: Literature review .......................................................... 6 3. The empirical model ........................................................................................................................ 8 3.1. The difference-in-differences specification ............................................................................... 9 3.2. Industry exposure to policy reforms ........................................................................................ 10 4. Data and descriptive analysis ......................................................................................................... 11 4.1. Data ......................................................................................................................................... 11 4.2. Descriptive analysis ................................................................................................................. 13 5. Empirical results ............................................................................................................................ 15 5.1. Baseline ................................................................................................................................... 15 5.2. Sensitivity analysis .................................................................................................................. 19 6. Conclusion ..................................................................................................................................... 20 References ............................................................................................................................................ 21 Annex A. Sensitivity to inclusion of several policy variables ........................................................... 25 Annex B. Glossary ............................................................................................................................... 29 Tables Table 1. Theoretical effects of public policies on the labour share ......................................................... 8 Table 2. The effect of public policies on the labour share..................................................................... 18 Table 3. Sensitivity to adding confounding factors ............................................................................... 19 Table A.1. Additional policy covariates to the specification for PMR ................................................. 25 Table A.2. Additional policy covariates to the specification for EPL ................................................... 26 Table A.3. Additional policy covariates to the specification for ALMP ............................................... 27 Table A.4. Additional policy covariates to the specification for minimum wage ................................. 28 Figures Figure 1. Large cross-country heterogeneity in labour share developments ......................................... 14 Figure 2. Changes in public policies and institutions, 1995-2016 ......................................................... 14 LABOUR SHARE DEVELOPMENTS OVER THE PAST TWO DECADES: THE ROLE OF PUBLIC POLICIES Unclassified ECO/WKP(2019)10 │ 5 Labour share developments over the past two decades: The role of public policies By Mathilde Pak and Cyrille Schwellnus1 1. Introduction 1. Several OECD countries have been grappling not only with slow productivity growth but have also experienced a slowdown in real average wage growth relative to productivity growth, i.e. a decline in the labour share. The evidence indicates that global developments in technology and trade have pushed real average wages down relative to productivity (Schwellnus et al., 2018[1]), but large cross-country differences in labour share developments suggest an important role for domestic policies and institutions. 2. Public policies can affect the labour share by changing the level and the distribution of producer rents as well as the price of capital relative to labour. Pro-competition product market reforms, for instance, are likely to reduce the level of producer rents while pro- worker labour market regulations and collective bargaining arrangements may shift
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